Pith Number

pith:FCYQPXIR

pith:2013:FCYQPXIRUITTKDSMYUZQPWO66R

not attested not anchored not stored refs pending

A null space property approach to compressed sensing with frames

Haichao Wang, Rongrong Wang, Xuemei Chen

arxiv:1302.7074 v3 · 2013-02-28 · cs.IT · math.FA · math.IT

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FCYQPXIRUITTKDSMYUZQPWO66R}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T03:13:58.178353Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

28b107dd11a227350e4cc53307d9def46ded6dd00628cc253d67524e96456b46

Aliases

arxiv: 1302.7074 · arxiv_version: 1302.7074v3 · doi: 10.48550/arxiv.1302.7074 · pith_short_12: FCYQPXIRUITT · pith_short_16: FCYQPXIRUITTKDSM · pith_short_8: FCYQPXIR

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/FCYQPXIRUITTKDSMYUZQPWO66R \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 28b107dd11a227350e4cc53307d9def46ded6dd00628cc253d67524e96456b46

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "63b79c7c2b99e5a3003305865fc5af3a69ade3ecb22e6b7dac699e7ed0a95da7",
    "cross_cats_sorted": [
      "math.FA",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2013-02-28T03:58:36Z",
    "title_canon_sha256": "3c647cea9376878230055d5af203c732a1e6f36f62c9410fcc538345088fb9a8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.7074",
    "kind": "arxiv",
    "version": 3
  }
}